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Thermanit, TIG rod, stainless and acid-resistant steels

Thermanit 21/33 So TIG rod

EN ISO classification14343-A WZ 21 33 Mn Nb
Shielding gasI1: 100 % argon
ApprovalsTÜV (07256), CE
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Authorised distributorvoestalpine Böhler Welding
Courier shippingfrom the warehouse in Krotoszyn
Data sheetcomposition, properties, specifications
Wire selectionhelp from a welding engineer
Manufacturer data sheet
Application Specifications Manufacturer datasheet Fits Substitute Bought together
Application

What Thermanit 21/33 So TIG rod is used for

Thermanit 21/33 So is a high alloyed austenitic stainless TIG rod. It goes into tanks, process pipelines and equipment for the chemical and food industries.

You feed the filler into the pool by hand while the arc burns between the tungsten electrode and the weld. The deposit has an austenitic structure that resists corrosion.

  • Classification EN ISO: 14343-A WZ 21 33 Mn Nb
  • Shielding gas: I1
  • Approvals: TÜV (07256), CE

Keep the heat input down and do not hold the joint hot longer than you need to, austenite expands strongly and pulls the structure out of shape. Keep the rod inside the gas shield even after you lift it from the pool, a cold oxidised end will contaminate the next drop. Set the gas post-flow long enough for the pool and the electrode to cool under the shield. A change of shielding mixture changes how the arc behaves, so try it on a test piece before production. When you work to a qualified procedure, check that the filler matches what the WPS states.

Manufacturer datasheet

Chemical composition and properties from the manufacturer datasheet

Datasheet PDF

Typical weld metal values from the voestalpine Böhler Welding data sheet, issue 02/2022. The minimum or the range guaranteed by the maker is given in brackets. The figures depend on the heat treatment condition and the shielding gas stated in the row and do not replace testing the joint to your own WPS.

Chemical composition, wt.-%
CSiMnCrNiNb
0,120,204,821,532,51,2
Welding data and approvals
Polaritydirect current, electrode negative (DC-)
Shielding gas to EN ISO 14175I1
ApprovalsTÜV (07256), CE
Datasheet edition02/2022
Mechanical properties of the all-weld metal, typical values
Condition Yield strength Re, MPa Tensile strength Rm, MPa Elongation A, % Impact energy KV, J at 20 °C
u 400 (min. 380) 600 (min. 510) 20 100 (min. 47)
Fits

For which materials and machines

Base materials

Material group: stainless and acid-resistant steels. The exact grades and thicknesses are in the manufacturer data sheet, and for an unusual joint call us, we will pick the filler metal.

Process and machines

TIG rod, works on any sound machine for this process: welders. Shielding gas: I1: 100 % argon.

Used welders New welders Ask us to help you choose
Technical substitute

A substitute for this consumable

We will find a substitute with the same classification, diameter and shielding gas over the phone: +48 669 162 833.

From the same group

Other consumables for the same material

For comparison before you buy. A technical substitute is listed above.

All: TIG welding rods